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12
MCQ (Multiple Correct Answer)

Which of the following statement(s) is/are not true about the following decomposition reaction?

$$2 \mathrm{KClO}_3 \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2$$

A
Potassium is undergoing oxidation
B
Chlorine is undergoing oxidation
C
Oxygen is reduced
D
None of the species are undergoing oxidation or reduction
13
MCQ (Multiple Correct Answer)

Identify the correct statement (s) in relation to the following reaction.

$$\mathrm{Zn}+2 \mathrm{HCl} \longrightarrow \mathrm{ZnCl}_2+\mathrm{H}_2$$

A
Zinc is acting as an oxidant
B
Chlorine is acting as a reductant
C
Hydrogen ion is acting as an oxidant
D
Zinc is acting as a reductant
14
MCQ (Multiple Correct Answer)

The exhibition of various oxidation states by an element is also related to the outer orbital electronic configuration of its atom. Atom (s) having which of the following outermost electronic configurations will exhibit more than one oxidation state in its compounds.

A
$3 s^1$
B
$3 d^1 4 s^2$
C
$3 d^2 4 s^2$
D
$3 s^2 3 p^3$
15
MCQ (Multiple Correct Answer)

Identify the correct statements with reference to the given reaction

$$\mathrm{P}_4+3 \mathrm{OH}^{-}+3 \mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{PH}_3+3 \mathrm{H}_2 \mathrm{PO}_2^{-}$$

A
Phosphorus is undergoing reduction only
B
Phosphorus is undergoing oxidation only
C
Phosphorus is undergoing oxidation as well as reduction
D
Hydrogen is undergoing neither oxidation nor reduction
16
MCQ (Multiple Correct Answer)

Which of the following electrodes will act as anodes, which connected to Standard Hydrogen Electrode ?

A
$\mathrm{Al} / \mathrm{Al}^{3+} \quad E^{\ominus}=-1.66$
B
$\mathrm{Fe} / \mathrm{Fe}^{2+} \quad E^{\ominus}=-0.44$
C
$\mathrm{Cu} / \mathrm{Cu}^{2+} \quad E^{\ominus}=+0.34$
D
$\mathrm{F}_2(\mathrm{~g}) / 2 \mathrm{~F}^{-}(\mathrm{aq}) E^{\ominus}=02.87$
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